I was flushing my coolant yesterday and i think on the third flush coolant started coming out the hole next to the radiator petcock/drain plug.
. Does anyone know how to fix this? Its driving me crazy. I think it started leaking after i squeezed the lower radiator hose by mistake when bleeding the air when i shhouldve squeezed the top. sigh edit: 02 4 banger

 

That's the hole where the coolant drains out when you open the petcock. There's probably a bad o-ring on the petcock itself. You should be able to pull it all the way out and replace just the o-ring.

 

Just remember...this is the drain, so to replace the O-ring will require to empty the radiator and of course be cold.

 

 

Yeah its still pouring water out both he hole and the plug hole Heres a pic of the plug, im fairly sure this plug doesnt even use an o ring. I tried some teflon tape and it didn't help much. My radiator isnt oem and i dont know the model so i havent been able to find a replacement plug. I suppose i probably tightened it too tight when i screwed it in one time. My next move is to just permanently seal that hole and the plug hole, what would be the best sealant for this?

 

So my parents jimmy had a leak there, ended up having a crack going along top to bottom of the drain plug threads. Would only show the crack when tightened. I tried getting an aftermarket plug in and that's what made the crack more visible. Had to swap the rad. For 100$, it's a good investment.

 

Did you ever figure this out? I have the same type of drain plug and it doesn't seem to even have an o-ring.

 

Did you look for the O ring in the radiator? Not going to be easy to see.

 

Probably needs an o-ring as mentioned by others but If your going to go the sealant route use leak lock. That stuff is bomb proof and removable:


George

 

Thanks for the tip! I just found the o-ring in the catch pan.